HYDROLYSIS RESISTANT ORGANOMODIFIED DISILOXANE SURFACTANTS

Abstract

Compositions comprising an asymmetric disiloxane surfactant composition comprising a silicone composition comprising a silicone having the formula: MM' where M or M' comprises an alkylpolyalkyleneoxide bearing substituent selected from the group consisting of: R13(C2H4O)a(C3H6O)b(C4H8O)cR14 and R12SiR5R6(R13(C2H4O)a(C3H6O)b(aH8O)cR14) that exhibit resistance to hydrolysis over a wide pH range.

3. PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed : -

CROSS REFERENCE TO RELATED APPLICATIONS
This application is a Continuation-In-Part Application of US Ser. No 11/300,100 filed December 13, 2005 which claims the benefit of U.S. Provisional Application Serial No. 60/726,409, filed October 13, 2005.
FIELD OF INVENTION
The present invention relates to disiloxane surfactant compositions that exhibit resistance to hydrolysis over a wide pH range. More particularly the present invention relates to such hydrolysis resistant disiloxane surfactants having a resistance to hydrolysis between a pH of about 3 to a pH of about 12.
BACKGROUND OF THE INVENTION
The topical application of liquid compositions to the surfaces of both animate and inanimate objects to effect a desired change involve the processes of controlling wetting, spreading, foaming, detergency, and the like. When used in aqueous solutions to improve the delivery of active ingredients to the surface being treated, trisiloxane type compounds have been found to be useful in enabling the control of these processes to achieve the desired effect. However, the trisiloxane compounds may only be used in a narrow pH range, ranging from a slightly acidic pH of 6 to a very mildly basic pH of 7.5. Outside this narrow pH range, the trisiloxane compounds are not stable to hydrolysis undergoing a rapid decomposition.
SUMMARY OF THE INVENTION
The present invention provides for a silicone composition comprising a silicone having the formula:
MM'
where
M = R1R2S3O1/2;
M' = R4R5R6SiO1/2;
with R1 selected from the group consisting of branched monovalent hydrocarbon radical of from 3 to 6 carbon atoms and R7, where R7 is selected from the group consisting of
R8R9R10SiR12and (R4R5R6)SiR12)
with R8, R9, and R10 each independently selected from the group of monovalent hydrocarbon radicals having from 1 to 6 carbon atoms and monovalent aryl or